source: trunk/binutils/include/coff/alpha.h@ 2532

Last change on this file since 2532 was 610, checked in by bird, 22 years ago

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File size: 10.9 KB
Line 
1/* ECOFF support on Alpha machines.
2 coff/ecoff.h must be included before this file.
3
4 Copyright 2001 Free Software Foundation, Inc.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20/********************** FILE HEADER **********************/
21
22struct external_filehdr
23{
24 unsigned char f_magic[2]; /* magic number */
25 unsigned char f_nscns[2]; /* number of sections */
26 unsigned char f_timdat[4]; /* time & date stamp */
27 unsigned char f_symptr[8]; /* file pointer to symtab */
28 unsigned char f_nsyms[4]; /* number of symtab entries */
29 unsigned char f_opthdr[2]; /* sizeof(optional hdr) */
30 unsigned char f_flags[2]; /* flags */
31};
32
33/* Magic numbers are defined in coff/ecoff.h. */
34#define ALPHA_ECOFF_BADMAG(x) \
35 ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
36
37/* The object type is encoded in the f_flags. */
38#define F_ALPHA_OBJECT_TYPE_MASK 0x3000
39#define F_ALPHA_NO_SHARED 0x1000
40#define F_ALPHA_SHARABLE 0x2000
41#define F_ALPHA_CALL_SHARED 0x3000
42
43#define FILHDR struct external_filehdr
44#define FILHSZ 24
45
46/********************** AOUT "OPTIONAL HEADER" **********************/
47
48typedef struct external_aouthdr
49{
50 unsigned char magic[2]; /* type of file */
51 unsigned char vstamp[2]; /* version stamp */
52 unsigned char bldrev[2]; /* ?? */
53 unsigned char padding[2]; /* pad to quadword boundary */
54 unsigned char tsize[8]; /* text size in bytes */
55 unsigned char dsize[8]; /* initialized data " " */
56 unsigned char bsize[8]; /* uninitialized data " " */
57 unsigned char entry[8]; /* entry pt. */
58 unsigned char text_start[8]; /* base of text used for this file */
59 unsigned char data_start[8]; /* base of data used for this file */
60 unsigned char bss_start[8]; /* base of bss used for this file */
61 unsigned char gprmask[4]; /* bitmask of general registers used */
62 unsigned char fprmask[4]; /* bitmask of floating point registers used */
63 unsigned char gp_value[8]; /* value for gp register */
64} AOUTHDR;
65
66/* compute size of a header */
67
68#define AOUTSZ 80
69#define AOUTHDRSZ 80
70
71/********************** SECTION HEADER **********************/
72
73struct external_scnhdr
74{
75 unsigned char s_name[8]; /* section name */
76 unsigned char s_paddr[8]; /* physical address, aliased s_nlib */
77 unsigned char s_vaddr[8]; /* virtual address */
78 unsigned char s_size[8]; /* section size */
79 unsigned char s_scnptr[8]; /* file ptr to raw data for section */
80 unsigned char s_relptr[8]; /* file ptr to relocation */
81 unsigned char s_lnnoptr[8]; /* file ptr to line numbers */
82 unsigned char s_nreloc[2]; /* number of relocation entries */
83 unsigned char s_nlnno[2]; /* number of line number entries*/
84 unsigned char s_flags[4]; /* flags */
85};
86
87#define SCNHDR struct external_scnhdr
88#define SCNHSZ 64
89
90/********************** RELOCATION DIRECTIVES **********************/
91
92struct external_reloc
93{
94 unsigned char r_vaddr[8];
95 unsigned char r_symndx[4];
96 unsigned char r_bits[4];
97};
98
99#define RELOC struct external_reloc
100#define RELSZ 16
101
102/* Constants to unpack the r_bits field. The Alpha seems to always be
103 little endian, so I haven't bothered to define big endian variants
104 of these. */
105
106#define RELOC_BITS0_TYPE_LITTLE 0xff
107#define RELOC_BITS0_TYPE_SH_LITTLE 0
108
109#define RELOC_BITS1_EXTERN_LITTLE 0x01
110
111#define RELOC_BITS1_OFFSET_LITTLE 0x7e
112#define RELOC_BITS1_OFFSET_SH_LITTLE 1
113
114#define RELOC_BITS1_RESERVED_LITTLE 0x80
115#define RELOC_BITS1_RESERVED_SH_LITTLE 7
116#define RELOC_BITS2_RESERVED_LITTLE 0xff
117#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1
118#define RELOC_BITS3_RESERVED_LITTLE 0x03
119#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9
120
121#define RELOC_BITS3_SIZE_LITTLE 0xfc
122#define RELOC_BITS3_SIZE_SH_LITTLE 2
123
124/* The r_type field in a reloc is one of the following values. */
125#define ALPHA_R_IGNORE 0
126#define ALPHA_R_REFLONG 1
127#define ALPHA_R_REFQUAD 2
128#define ALPHA_R_GPREL32 3
129#define ALPHA_R_LITERAL 4
130#define ALPHA_R_LITUSE 5
131#define ALPHA_R_GPDISP 6
132#define ALPHA_R_BRADDR 7
133#define ALPHA_R_HINT 8
134#define ALPHA_R_SREL16 9
135#define ALPHA_R_SREL32 10
136#define ALPHA_R_SREL64 11
137#define ALPHA_R_OP_PUSH 12
138#define ALPHA_R_OP_STORE 13
139#define ALPHA_R_OP_PSUB 14
140#define ALPHA_R_OP_PRSHIFT 15
141#define ALPHA_R_GPVALUE 16
142#define ALPHA_R_GPRELHIGH 17
143#define ALPHA_R_GPRELLOW 18
144#define ALPHA_R_IMMED 19
145
146/* Overloaded reloc value used by Net- and OpenBSD. */
147#define ALPHA_R_LITERALSLEAZY 17
148
149/* With ALPHA_R_LITUSE, the r_size field is one of the following values. */
150#define ALPHA_R_LU_BASE 1
151#define ALPHA_R_LU_BYTOFF 2
152#define ALPHA_R_LU_JSR 3
153
154/* With ALPHA_R_IMMED, the r_size field is one of the following values. */
155#define ALPHA_R_IMMED_GP_16 1
156#define ALPHA_R_IMMED_GP_HI32 2
157#define ALPHA_R_IMMED_SCN_HI32 3
158#define ALPHA_R_IMMED_BR_HI32 4
159#define ALPHA_R_IMMED_LO32 5
160
161/********************** SYMBOLIC INFORMATION **********************/
162
163/* Written by John Gilmore. */
164
165/* ECOFF uses COFF-like section structures, but its own symbol format.
166 This file defines the symbol format in fields whose size and alignment
167 will not vary on different host systems. */
168
169/* File header as a set of bytes */
170
171struct hdr_ext
172{
173 unsigned char h_magic[2];
174 unsigned char h_vstamp[2];
175 unsigned char h_ilineMax[4];
176 unsigned char h_idnMax[4];
177 unsigned char h_ipdMax[4];
178 unsigned char h_isymMax[4];
179 unsigned char h_ioptMax[4];
180 unsigned char h_iauxMax[4];
181 unsigned char h_issMax[4];
182 unsigned char h_issExtMax[4];
183 unsigned char h_ifdMax[4];
184 unsigned char h_crfd[4];
185 unsigned char h_iextMax[4];
186 unsigned char h_cbLine[8];
187 unsigned char h_cbLineOffset[8];
188 unsigned char h_cbDnOffset[8];
189 unsigned char h_cbPdOffset[8];
190 unsigned char h_cbSymOffset[8];
191 unsigned char h_cbOptOffset[8];
192 unsigned char h_cbAuxOffset[8];
193 unsigned char h_cbSsOffset[8];
194 unsigned char h_cbSsExtOffset[8];
195 unsigned char h_cbFdOffset[8];
196 unsigned char h_cbRfdOffset[8];
197 unsigned char h_cbExtOffset[8];
198};
199
200/* File descriptor external record */
201
202struct fdr_ext
203{
204 unsigned char f_adr[8];
205 unsigned char f_cbLineOffset[8];
206 unsigned char f_cbLine[8];
207 unsigned char f_cbSs[8];
208 unsigned char f_rss[4];
209 unsigned char f_issBase[4];
210 unsigned char f_isymBase[4];
211 unsigned char f_csym[4];
212 unsigned char f_ilineBase[4];
213 unsigned char f_cline[4];
214 unsigned char f_ioptBase[4];
215 unsigned char f_copt[4];
216 unsigned char f_ipdFirst[4];
217 unsigned char f_cpd[4];
218 unsigned char f_iauxBase[4];
219 unsigned char f_caux[4];
220 unsigned char f_rfdBase[4];
221 unsigned char f_crfd[4];
222 unsigned char f_bits1[1];
223 unsigned char f_bits2[3];
224 unsigned char f_padding[4];
225};
226
227#define FDR_BITS1_LANG_BIG 0xF8
228#define FDR_BITS1_LANG_SH_BIG 3
229#define FDR_BITS1_LANG_LITTLE 0x1F
230#define FDR_BITS1_LANG_SH_LITTLE 0
231
232#define FDR_BITS1_FMERGE_BIG 0x04
233#define FDR_BITS1_FMERGE_LITTLE 0x20
234
235#define FDR_BITS1_FREADIN_BIG 0x02
236#define FDR_BITS1_FREADIN_LITTLE 0x40
237
238#define FDR_BITS1_FBIGENDIAN_BIG 0x01
239#define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
240
241#define FDR_BITS2_GLEVEL_BIG 0xC0
242#define FDR_BITS2_GLEVEL_SH_BIG 6
243#define FDR_BITS2_GLEVEL_LITTLE 0x03
244#define FDR_BITS2_GLEVEL_SH_LITTLE 0
245
246/* We ignore the `reserved' field in bits2. */
247
248/* Procedure descriptor external record */
249
250struct pdr_ext {
251 unsigned char p_adr[8];
252 unsigned char p_cbLineOffset[8];
253 unsigned char p_isym[4];
254 unsigned char p_iline[4];
255 unsigned char p_regmask[4];
256 unsigned char p_regoffset[4];
257 unsigned char p_iopt[4];
258 unsigned char p_fregmask[4];
259 unsigned char p_fregoffset[4];
260 unsigned char p_frameoffset[4];
261 unsigned char p_lnLow[4];
262 unsigned char p_lnHigh[4];
263 unsigned char p_gp_prologue[1];
264 unsigned char p_bits1[1];
265 unsigned char p_bits2[1];
266 unsigned char p_localoff[1];
267 unsigned char p_framereg[2];
268 unsigned char p_pcreg[2];
269};
270
271#define PDR_BITS1_GP_USED_BIG 0x80
272#define PDR_BITS1_REG_FRAME_BIG 0x40
273#define PDR_BITS1_PROF_BIG 0x20
274#define PDR_BITS1_RESERVED_BIG 0x1f
275#define PDR_BITS1_RESERVED_SH_LEFT_BIG 8
276#define PDR_BITS2_RESERVED_BIG 0xff
277#define PDR_BITS2_RESERVED_SH_BIG 0
278
279#define PDR_BITS1_GP_USED_LITTLE 0x01
280#define PDR_BITS1_REG_FRAME_LITTLE 0x02
281#define PDR_BITS1_PROF_LITTLE 0x04
282#define PDR_BITS1_RESERVED_LITTLE 0xf8
283#define PDR_BITS1_RESERVED_SH_LITTLE 3
284#define PDR_BITS2_RESERVED_LITTLE 0xff
285#define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
286
287/* Line numbers */
288
289struct line_ext {
290 unsigned char l_line[4];
291};
292
293/* Symbol external record */
294
295struct sym_ext {
296 unsigned char s_value[8];
297 unsigned char s_iss[4];
298 unsigned char s_bits1[1];
299 unsigned char s_bits2[1];
300 unsigned char s_bits3[1];
301 unsigned char s_bits4[1];
302};
303
304#define SYM_BITS1_ST_BIG 0xFC
305#define SYM_BITS1_ST_SH_BIG 2
306#define SYM_BITS1_ST_LITTLE 0x3F
307#define SYM_BITS1_ST_SH_LITTLE 0
308
309#define SYM_BITS1_SC_BIG 0x03
310#define SYM_BITS1_SC_SH_LEFT_BIG 3
311#define SYM_BITS1_SC_LITTLE 0xC0
312#define SYM_BITS1_SC_SH_LITTLE 6
313
314#define SYM_BITS2_SC_BIG 0xE0
315#define SYM_BITS2_SC_SH_BIG 5
316#define SYM_BITS2_SC_LITTLE 0x07
317#define SYM_BITS2_SC_SH_LEFT_LITTLE 2
318
319#define SYM_BITS2_RESERVED_BIG 0x10
320#define SYM_BITS2_RESERVED_LITTLE 0x08
321
322#define SYM_BITS2_INDEX_BIG 0x0F
323#define SYM_BITS2_INDEX_SH_LEFT_BIG 16
324#define SYM_BITS2_INDEX_LITTLE 0xF0
325#define SYM_BITS2_INDEX_SH_LITTLE 4
326
327#define SYM_BITS3_INDEX_SH_LEFT_BIG 8
328#define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
329
330#define SYM_BITS4_INDEX_SH_LEFT_BIG 0
331#define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
332
333/* External symbol external record */
334
335struct ext_ext {
336 struct sym_ext es_asym;
337 unsigned char es_bits1[1];
338 unsigned char es_bits2[3];
339 unsigned char es_ifd[4];
340};
341
342#define EXT_BITS1_JMPTBL_BIG 0x80
343#define EXT_BITS1_JMPTBL_LITTLE 0x01
344
345#define EXT_BITS1_COBOL_MAIN_BIG 0x40
346#define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
347
348#define EXT_BITS1_WEAKEXT_BIG 0x20
349#define EXT_BITS1_WEAKEXT_LITTLE 0x04
350
351/* Dense numbers external record */
352
353struct dnr_ext {
354 unsigned char d_rfd[4];
355 unsigned char d_index[4];
356};
357
358/* Relative file descriptor */
359
360struct rfd_ext {
361 unsigned char rfd[4];
362};
363
364/* Optimizer symbol external record */
365
366struct opt_ext {
367 unsigned char o_bits1[1];
368 unsigned char o_bits2[1];
369 unsigned char o_bits3[1];
370 unsigned char o_bits4[1];
371 struct rndx_ext o_rndx;
372 unsigned char o_offset[4];
373};
374
375#define OPT_BITS2_VALUE_SH_LEFT_BIG 16
376#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
377
378#define OPT_BITS3_VALUE_SH_LEFT_BIG 8
379#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
380
381#define OPT_BITS4_VALUE_SH_LEFT_BIG 0
382#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16
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